From 8e9fe7e054759065c6dc5f59ecd985bf6de777f7 Mon Sep 17 00:00:00 2001
From: Darren Thompson <me@dtho.mp>
Date: Wed, 16 Oct 2019 23:29:40 -0400
Subject: [PATCH] ci: Update macOS build script to use GNU compat greadlink

---
 .travis.yml |  1 +
 build.sh    | 10 +++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 318a283230..0470f86cf1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -52,6 +52,7 @@ addons:
       - pixman
       - sdl2
       - libepoxy
+      - coreutils
 
 git:
   # we want to do this ourselves
diff --git a/build.sh b/build.sh
index c4ae6bac14..87b44f7039 100755
--- a/build.sh
+++ b/build.sh
@@ -37,6 +37,7 @@ do
     esac
 done
 
+readlink=$(command -v readlink)
 
 case "$(uname -s)" in # adjust compilation option based on platform
     Linux)
@@ -50,6 +51,13 @@ case "$(uname -s)" in # adjust compilation option based on platform
         sys_opts='--disable-cocoa'
         # necessary to find libffi, which is required by gobject
         export PKG_CONFIG_PATH="${PKG_CONFIG_PATH}/usr/local/opt/libffi/lib/pkgconfig"
+        # macOS needs greadlink for a GNU compatible version of readlink
+        if readlink=$(command -v greadlink); then
+            echo 'GNU compatible readlink detected'
+        else
+            echo 'Could not find a GNU compatible readlink. Please install coreutils with homebrew'
+            exit -1
+        fi
         ;;
     CYGWIN*|MINGW*|MSYS*)
         echo 'Compiling for Windows…'
@@ -64,7 +72,7 @@ case "$(uname -s)" in # adjust compilation option based on platform
 esac
 
 # find absolute path (and resolve symlinks) to build out of tree
-configure="$(dirname "$(readlink -f "${0}")")/configure"
+configure="$(dirname "$($readlink -f "${0}")")/configure"
 
 set -x # Print commands from now on